diff --git a/dev/tests/example.lua b/dev/tests/example.lua
index c066c1ed..3dbe1197 100644
--- a/dev/tests/example.lua
+++ b/dev/tests/example.lua
@@ -8,11 +8,8 @@ assert(player.get_name(pid) == "Xerxes")
 test.sleep_until(function() return world.count_chunks() >= 9 end, 1000)
 print(world.count_chunks())
 
-for i=1,3 do
-    print("---")
-    timeit(1000000, block.get, 0, 0, 0)
-    timeit(1000000, block.get_slow, 0, 0, 0)
-end
+timeit(10000000, block.get, 0, 0, 0)
+timeit(10000000, core.blank, 0, 0, 0)
 
 block.destruct(0, 0, 0, pid)
 assert(block.get(0, 0, 0) == 0)
diff --git a/src/constants.hpp b/src/constants.hpp
index c8de5a8d..6f4a6ce6 100644
--- a/src/constants.hpp
+++ b/src/constants.hpp
@@ -35,6 +35,11 @@ inline constexpr int CHUNK_D = 16;
 inline constexpr uint VOXEL_USER_BITS = 8;
 inline constexpr uint VOXEL_USER_BITS_OFFSET = sizeof(blockstate_t)*8-VOXEL_USER_BITS;
 
+/// @brief % unordered map max average buckets load factor.
+/// Low value gives significant performance impact by minimizing collisions and
+/// lookup latency. Default value (1.0) shows x2 slower work.
+inline constexpr float CHUNKS_MAP_MAX_LOAD_FACTOR = 0.1f;
+
 /// @brief chunk volume (count of voxels per Chunk)
 inline constexpr int CHUNK_VOL = (CHUNK_W * CHUNK_H * CHUNK_D);
 
diff --git a/src/logic/scripting/lua/libs/libblock.cpp b/src/logic/scripting/lua/libs/libblock.cpp
index dbd87489..5d681e5f 100644
--- a/src/logic/scripting/lua/libs/libblock.cpp
+++ b/src/logic/scripting/lua/libs/libblock.cpp
@@ -8,6 +8,7 @@
 #include "voxels/Chunks.hpp"
 #include "voxels/voxel.hpp"
 #include "voxels/GlobalChunks.hpp"
+#include "voxels/blocks_agent.hpp"
 #include "world/Level.hpp"
 #include "maths/voxmaths.hpp"
 #include "data/StructLayout.hpp"
@@ -15,13 +16,13 @@
 
 using namespace scripting;
 
-static const Block* require_block(lua::State* L) {
+static inline const Block* require_block(lua::State* L) {
     auto indices = content->getIndices();
     auto id = lua::tointeger(L, 1);
     return indices->blocks.get(id);
 }
 
-static int l_get_def(lua::State* L) {
+static inline int l_get_def(lua::State* L) {
     if (auto def = require_block(L)) {
         return lua::pushstring(L, def->name);
     }
@@ -39,8 +40,7 @@ static int l_is_solid_at(lua::State* L) {
     auto x = lua::tointeger(L, 1);
     auto y = lua::tointeger(L, 2);
     auto z = lua::tointeger(L, 3);
-
-    return lua::pushboolean(L, level->chunks->isSolidBlock(x, y, z));
+    return lua::pushboolean(L, blocks_agent::is_solid_at(*level->chunks, x, y, z));
 }
 
 static int l_count(lua::State* L) {
@@ -110,16 +110,7 @@ static int l_get(lua::State* L) {
     auto x = lua::tointeger(L, 1);
     auto y = lua::tointeger(L, 2);
     auto z = lua::tointeger(L, 3);
-    auto vox = level->chunks->get(x, y, z);
-    int id = vox == nullptr ? -1 : vox->id;
-    return lua::pushinteger(L, id);
-}
-
-static int l_get_slow(lua::State* L) {
-    auto x = lua::tointeger(L, 1);
-    auto y = lua::tointeger(L, 2);
-    auto z = lua::tointeger(L, 3);
-    auto vox = level->chunksStorage->get(x, y, z);
+    auto vox = blocks_agent::get(*level->chunksStorage, x, y, z);
     int id = vox == nullptr ? -1 : vox->id;
     return lua::pushinteger(L, id);
 }
@@ -128,7 +119,7 @@ static int l_get_x(lua::State* L) {
     auto x = lua::tointeger(L, 1);
     auto y = lua::tointeger(L, 2);
     auto z = lua::tointeger(L, 3);
-    auto vox = level->chunksStorage->get(x, y, z);
+    auto vox = blocks_agent::get(*level->chunksStorage, x, y, z);
     if (vox == nullptr) {
         return lua::pushivec_stack(L, glm::ivec3(1, 0, 0));
     }
@@ -145,7 +136,7 @@ static int l_get_y(lua::State* L) {
     auto x = lua::tointeger(L, 1);
     auto y = lua::tointeger(L, 2);
     auto z = lua::tointeger(L, 3);
-    auto vox = level->chunksStorage->get(x, y, z);
+    auto vox = blocks_agent::get(*level->chunksStorage, x, y, z);
     if (vox == nullptr) {
         return lua::pushivec_stack(L, glm::ivec3(0, 1, 0));
     }
@@ -162,7 +153,7 @@ static int l_get_z(lua::State* L) {
     auto x = lua::tointeger(L, 1);
     auto y = lua::tointeger(L, 2);
     auto z = lua::tointeger(L, 3);
-    auto vox = level->chunksStorage->get(x, y, z);
+    auto vox = blocks_agent::get(*level->chunksStorage, x, y, z);
     if (vox == nullptr) {
         return lua::pushivec_stack(L, glm::ivec3(0, 0, 1));
     }
@@ -179,7 +170,7 @@ static int l_get_rotation(lua::State* L) {
     auto x = lua::tointeger(L, 1);
     auto y = lua::tointeger(L, 2);
     auto z = lua::tointeger(L, 3);
-    voxel* vox = level->chunksStorage->get(x, y, z);
+    auto vox = blocks_agent::get(*level->chunksStorage, x, y, z);
     int rotation = vox == nullptr ? 0 : vox->state.rotation;
     return lua::pushinteger(L, rotation);
 }
@@ -197,7 +188,7 @@ static int l_get_states(lua::State* L) {
     auto x = lua::tointeger(L, 1);
     auto y = lua::tointeger(L, 2);
     auto z = lua::tointeger(L, 3);
-    auto vox = level->chunksStorage->get(x, y, z);
+    auto vox = blocks_agent::get(*level->chunksStorage, x, y, z);
     int states = vox == nullptr ? 0 : blockstate2int(vox->state);
     return lua::pushinteger(L, states);
 }
@@ -226,7 +217,7 @@ static int l_get_user_bits(lua::State* L) {
     auto offset = lua::tointeger(L, 4) + VOXEL_USER_BITS_OFFSET;
     auto bits = lua::tointeger(L, 5);
 
-    auto vox = level->chunks->get(x, y, z);
+    auto vox = blocks_agent::get(*level->chunksStorage, x, y, z);
     if (vox == nullptr) {
         return lua::pushinteger(L, 0);
     }
@@ -352,7 +343,7 @@ static int l_place(lua::State* L) {
     if (static_cast<size_t>(id) >= indices->blocks.count()) {
         return 0;
     }
-    if (!level->chunks->get(x, y, z)) {
+    if (!blocks_agent::get(*level->chunksStorage, x, y, z)) {
         return 0;
     }
     const auto def = level->content->getIndices()->blocks.get(id);
@@ -373,11 +364,11 @@ static int l_destruct(lua::State* L) {
     auto y = lua::tointeger(L, 2);
     auto z = lua::tointeger(L, 3);
     auto playerid = lua::gettop(L) >= 4 ? lua::tointeger(L, 4) : -1;
-    auto voxel = level->chunks->get(x, y, z);
-    if (voxel == nullptr) {
+    auto vox = blocks_agent::get(*level->chunksStorage, x, y, z);
+    if (vox == nullptr) {
         return 0;
     }
-    auto& def = level->content->getIndices()->blocks.require(voxel->id);
+    auto& def = level->content->getIndices()->blocks.require(vox->id);
     auto player = level->players->get(playerid);
     controller->getBlocksController()->breakBlock(player, def, x, y, z);
     return 0;
@@ -504,12 +495,15 @@ static int l_get_field(lua::State* L) {
     }
     auto cx = floordiv(x, CHUNK_W);
     auto cz = floordiv(z, CHUNK_D);
-    auto chunk = level->chunks->getChunk(cx, cz);
+    auto chunk = blocks_agent::get_chunk(*level->chunksStorage, cx, cz);
+    if (chunk == nullptr || y < 0 || y >= CHUNK_H) {
+        return 0;
+    }
     auto lx = x - cx * CHUNK_W;
     auto lz = z - cz * CHUNK_W;
     size_t voxelIndex = vox_index(lx, y, lz);
 
-    const auto& vox = level->chunks->require(x, y, z);
+    const auto& vox = chunk->voxels[voxelIndex];
     const auto& def = content->getIndices()->blocks.require(vox.id);
     if (def.dataStruct == nullptr) {
         return 0;
@@ -568,15 +562,18 @@ static int l_set_field(lua::State* L) {
     if (lua::gettop(L) >= 6) {
         index = lua::tointeger(L, 6);
     }
-    auto vox = level->chunks->get(x, y, z);
     auto cx = floordiv(x, CHUNK_W);
     auto cz = floordiv(z, CHUNK_D);
-    auto chunk = level->chunks->getChunk(cx, cz);
     auto lx = x - cx * CHUNK_W;
     auto lz = z - cz * CHUNK_W;
+    auto chunk = blocks_agent::get_chunk(*level->chunksStorage, cx, cz);
+    if (chunk == nullptr || y < 0 || y >= CHUNK_H) {
+        return 0;
+    }
     size_t voxelIndex = vox_index(lx, y, lz);
+    const auto& vox = chunk->voxels[voxelIndex];
 
-    const auto& def = content->getIndices()->blocks.require(vox->id);
+    const auto& def = content->getIndices()->blocks.require(vox.id);
     if (def.dataStruct == nullptr) {
         return 0;
     }
@@ -608,7 +605,6 @@ const luaL_Reg blocklib[] = {
     {"is_replaceable_at", lua::wrap<l_is_replaceable_at>},
     {"set", lua::wrap<l_set>},
     {"get", lua::wrap<l_get>},
-    {"get_slow", lua::wrap<l_get_slow>},
     {"get_X", lua::wrap<l_get_x>},
     {"get_Y", lua::wrap<l_get_y>},
     {"get_Z", lua::wrap<l_get_z>},
diff --git a/src/logic/scripting/lua/libs/libcore.cpp b/src/logic/scripting/lua/libs/libcore.cpp
index 5ac9d93d..d2d0c80f 100644
--- a/src/logic/scripting/lua/libs/libcore.cpp
+++ b/src/logic/scripting/lua/libs/libcore.cpp
@@ -16,6 +16,7 @@
 #include "logic/EngineController.hpp"
 #include "logic/LevelController.hpp"
 #include "util/listutil.hpp"
+#include "util/platform.hpp"
 #include "window/Events.hpp"
 #include "window/Window.hpp"
 #include "world/Level.hpp"
@@ -220,8 +221,6 @@ static int l_load_texture(lua::State* L) {
     return 0;
 }
 
-#include "util/platform.hpp"
-
 static int l_open_folder(lua::State* L) {
     auto path = engine->getPaths()->resolve(lua::require_string(L, 1));
     platform::open_folder(path);
@@ -239,7 +238,7 @@ static int l_blank(lua::State*) {
 }
 
 const luaL_Reg corelib[] = {
-    {"nop", lua::wrap<l_blank>},
+    {"blank", lua::wrap<l_blank>},
     {"get_version", lua::wrap<l_get_version>},
     {"new_world", lua::wrap<l_new_world>},
     {"open_world", lua::wrap<l_open_world>},
diff --git a/src/voxels/Chunks.cpp b/src/voxels/Chunks.cpp
index 390ac16c..8bfe6166 100644
--- a/src/voxels/Chunks.cpp
+++ b/src/voxels/Chunks.cpp
@@ -23,6 +23,7 @@
 #include "Block.hpp"
 #include "Chunk.hpp"
 #include "voxel.hpp"
+#include "blocks_agent.hpp"
 
 Chunks::Chunks(
     int32_t w,
@@ -33,7 +34,7 @@ Chunks::Chunks(
     Level* level
 )
     : level(level),
-      indices(level->content->getIndices()),
+      indices(level ? level->content->getIndices() : nullptr),
       areaMap(w, d),
       worldFiles(wfile) {
     areaMap.setCenter(ox-w/2, oz-d/2);
@@ -43,30 +44,11 @@ Chunks::Chunks(
 }
 
 voxel* Chunks::get(int32_t x, int32_t y, int32_t z) const {
-    if (y < 0 || y >= CHUNK_H) {
-        return nullptr;
-    }
-    int cx = floordiv<CHUNK_W>(x);
-    int cz = floordiv<CHUNK_D>(z);
-    auto ptr = areaMap.getIf(cx, cz);
-    if (ptr == nullptr) {
-        return nullptr;
-    }
-    Chunk* chunk = ptr->get();
-    if (chunk == nullptr) {
-        return nullptr;
-    }
-    int lx = x - cx * CHUNK_W;
-    int lz = z - cz * CHUNK_D;
-    return &chunk->voxels[(y * CHUNK_D + lz) * CHUNK_W + lx];
+    return blocks_agent::get(*this, x, y, z);
 }
 
 voxel& Chunks::require(int32_t x, int32_t y, int32_t z) const {
-    auto voxel = get(x, y, z);
-    if (voxel == nullptr) {
-        throw std::runtime_error("voxel does not exist");
-    }
-    return *voxel;
+    return blocks_agent::require(*this, x, y, z);
 }
 
 const AABB* Chunks::isObstacleAt(float x, float y, float z) const {
@@ -103,9 +85,7 @@ const AABB* Chunks::isObstacleAt(float x, float y, float z) const {
 }
 
 bool Chunks::isSolidBlock(int32_t x, int32_t y, int32_t z) {
-    voxel* v = get(x, y, z);
-    if (v == nullptr) return false;
-    return indices->blocks.require(v->id).rt.solid;
+    return blocks_agent::is_solid_at(*this, x, y, z);
 }
 
 bool Chunks::isReplaceableBlock(int32_t x, int32_t y, int32_t z) {
diff --git a/src/voxels/Chunks.hpp b/src/voxels/Chunks.hpp
index fd33eb9a..a39c8960 100644
--- a/src/voxels/Chunks.hpp
+++ b/src/voxels/Chunks.hpp
@@ -152,4 +152,8 @@ public:
     size_t getVolume() const {
         return areaMap.area();
     }
+
+    const ContentIndices& getContentIndices() const {
+        return *indices;
+    }
 };
diff --git a/src/voxels/GlobalChunks.cpp b/src/voxels/GlobalChunks.cpp
index 379ca328..38843398 100644
--- a/src/voxels/GlobalChunks.cpp
+++ b/src/voxels/GlobalChunks.cpp
@@ -16,10 +16,10 @@
 #include "Block.hpp"
 #include "Chunk.hpp"
 
-inline long long keyfrom(int x, int z) {
+inline uint64_t keyfrom(int32_t x, int32_t z) {
     union {
-        int pos[2];
-        long long key;
+        int32_t pos[2];
+        uint64_t key;
     } ekey;
     ekey.pos[0] = x;
     ekey.pos[1] = z;
@@ -28,7 +28,9 @@ inline long long keyfrom(int x, int z) {
 
 static debug::Logger logger("chunks-storage");
 
-GlobalChunks::GlobalChunks(Level* level) : level(level) {
+GlobalChunks::GlobalChunks(Level* level)
+    : level(level), indices(level ? level->content->getIndices() : nullptr) {
+    chunksMap.max_load_factor(CHUNKS_MAP_MAX_LOAD_FACTOR);
 }
 
 std::shared_ptr<Chunk> GlobalChunks::fetch(int x, int z) {
@@ -67,6 +69,29 @@ void GlobalChunks::erase(int x, int z) {
     chunksMap.erase(keyfrom(x, z));
 }
 
+static inline auto load_inventories(
+    WorldRegions& regions,
+    const Chunk& chunk,
+    const ContentUnitIndices<Block>& defs
+) {
+    auto invs = regions.fetchInventories(chunk.x, chunk.z);
+    auto iterator = invs.begin();
+    while (iterator != invs.end()) {
+        uint index = iterator->first;
+        const auto& def = defs.require(chunk.voxels[index].id);
+        if (def.inventorySize == 0) {
+            iterator = invs.erase(iterator);
+            continue;
+        }
+        auto& inventory = iterator->second;
+        if (def.inventorySize != inventory->size()) {
+            inventory->resize(def.inventorySize);
+        }
+        ++iterator;
+    }
+    return invs;
+}
+
 std::shared_ptr<Chunk> GlobalChunks::create(int x, int z) {
     const auto& found = chunksMap.find(keyfrom(x, z));
     if (found != chunksMap.end()) {
@@ -84,22 +109,10 @@ std::shared_ptr<Chunk> GlobalChunks::create(int x, int z) {
 
         chunk->decode(data.get());
         check_voxels(indices, *chunk);
-        auto invs = regions.fetchInventories(chunk->x, chunk->z);
-        auto iterator = invs.begin();
-        while (iterator != invs.end()) {
-            uint index = iterator->first;
-            const auto& def = indices.blocks.require(chunk->voxels[index].id);
-            if (def.inventorySize == 0) {
-                iterator = invs.erase(iterator);
-                continue;
-            }
-            auto& inventory = iterator->second;
-            if (def.inventorySize != inventory->size()) {
-                inventory->resize(def.inventorySize);
-            }
-            ++iterator;
-        }
-        chunk->setBlockInventories(std::move(invs));
+
+        chunk->setBlockInventories(
+            load_inventories(regions, *chunk, indices.blocks)
+        );
 
         auto entitiesData = regions.fetchEntities(chunk->x, chunk->z);
         if (entitiesData.getType() == dv::value_type::object) {
@@ -132,24 +145,6 @@ size_t GlobalChunks::size() const {
     return chunksMap.size();
 }
 
-voxel* GlobalChunks::get(int x, int y, int z) const {
-    if (y < 0 || y >= CHUNK_H) {
-        return nullptr;
-    }
-
-    int cx = floordiv<CHUNK_W>(x);
-    int cz = floordiv<CHUNK_D>(z);
-
-    const auto& found = chunksMap.find(keyfrom(cx, cz));
-    if (found == chunksMap.end()) {
-        return nullptr;
-    }
-    const auto& chunk = found->second;
-    int lx = x - cx * CHUNK_W;
-    int lz = z - cz * CHUNK_D;
-    return &chunk->voxels[(y * CHUNK_D + lz) * CHUNK_W + lx];
-}
-
 void GlobalChunks::incref(Chunk* chunk) {
     auto key = reinterpret_cast<ptrdiff_t>(chunk);
     const auto& found = refCounters.find(key);
@@ -209,3 +204,15 @@ void GlobalChunks::saveAll() {
         save(chunk.get());
     }
 }
+
+void GlobalChunks::putChunk(std::shared_ptr<Chunk> chunk) {
+    chunksMap[keyfrom(chunk->x, chunk->z)] = std::move(chunk);
+}
+
+Chunk* GlobalChunks::getChunk(int cx, int cz) const {
+    const auto& found = chunksMap.find(keyfrom(cx, cz));
+    if (found == chunksMap.end()) {
+        return nullptr;
+    }
+    return found->second.get();
+}
diff --git a/src/voxels/GlobalChunks.hpp b/src/voxels/GlobalChunks.hpp
index b21e15e6..f7ce0e92 100644
--- a/src/voxels/GlobalChunks.hpp
+++ b/src/voxels/GlobalChunks.hpp
@@ -11,10 +11,12 @@
 
 class Chunk;
 class Level;
+class ContentIndices;
 
 class GlobalChunks {
     Level* level;
-    std::unordered_map<long long, std::shared_ptr<Chunk>> chunksMap;
+    const ContentIndices* indices;
+    std::unordered_map<uint64_t, std::shared_ptr<Chunk>> chunksMap;
     std::unordered_map<glm::ivec2, std::shared_ptr<Chunk>> pinnedChunks;
     std::unordered_map<ptrdiff_t, int> refCounters;
 public:
@@ -27,8 +29,6 @@ public:
     void pinChunk(std::shared_ptr<Chunk> chunk);
     void unpinChunk(int x, int z);
 
-    voxel* get(int x, int y, int z) const;
-
     size_t size() const;
 
     void incref(Chunk* chunk);
@@ -38,4 +38,12 @@ public:
 
     void save(Chunk* chunk);
     void saveAll();
+
+    void putChunk(std::shared_ptr<Chunk> chunk);
+
+    Chunk* getChunk(int cx, int cz) const;
+
+    const ContentIndices& getContentIndices() const {
+        return *indices;
+    }
 };
diff --git a/src/voxels/blocks_agent.hpp b/src/voxels/blocks_agent.hpp
new file mode 100644
index 00000000..31ae79c5
--- /dev/null
+++ b/src/voxels/blocks_agent.hpp
@@ -0,0 +1,58 @@
+#pragma once
+
+#include "voxel.hpp"
+#include "typedefs.hpp"
+#include "maths/voxmaths.hpp"
+
+class Chunk;
+class Chunks;
+class GlobalChunks;
+
+/// Using templates to minimize OOP overhead
+
+namespace blocks_agent {
+
+template<class Storage>
+inline Chunk* get_chunk(const Storage& chunks, int cx, int cz) {
+    return chunks.getChunk(cx, cz);
+}
+
+template<class Storage>
+inline voxel* get(const Storage& chunks, int32_t x, int32_t y, int32_t z) {
+    if (y < 0 || y >= CHUNK_H) {
+        return nullptr;
+    }
+    int cx = floordiv<CHUNK_W>(x);
+    int cz = floordiv<CHUNK_D>(z);
+    Chunk* chunk = get_chunk(chunks, cx, cz);
+    if (chunk == nullptr) {
+        return nullptr;
+    }
+    int lx = x - cx * CHUNK_W;
+    int lz = z - cz * CHUNK_D;
+    return &chunk->voxels[(y * CHUNK_D + lz) * CHUNK_W + lx];
+}
+
+template<class Storage>
+inline voxel& require(const Storage& chunks, int32_t x, int32_t y, int32_t z) {
+    auto vox = get(chunks, x, y, z);
+    if (vox == nullptr) {
+        throw std::runtime_error("voxel does not exist");
+    }
+    return *vox;
+}
+
+template<class Storage>
+inline const Block& get_block_def(const Storage& chunks, blockid_t id) {
+    return chunks.getContentIndices().blocks.require(id);
+}
+
+template<class Storage>
+inline bool is_solid_at(const Storage& chunks, int32_t x, int32_t y, int32_t z) {
+    if (auto vox = get(chunks, x, y, z)) {
+        return get_block_def(chunks, vox->id).rt.solid;
+    }
+    return false;
+}
+
+} // blocks_agent