diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6e4f199..0cd6cfd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,6 +11,7 @@ option(SHARED "Whether we should build a shared library, instead of a static one
 option(TESTS "Whether the test executable should be build as well." OFF)
 option(STATICC "Whether gcc and stdc++ should be linked statically to the library." OFF)
 set(SCRIPT_PROVIDER "angelscript" CACHE STRING "Which script provider to use.")
+set(LEVEL_SIZE "8" CACHE STRING "Number of bits to store the level as. Can be 8, 16, 32, or 64")
 
 if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
     add_compile_options(-fconcepts)
@@ -33,6 +34,18 @@ message(STATUS "Using:
 \t CXX ABI ${CMAKE_CXX_COMPILER_ABI}
 \t C++ Version ${CMAKE_CXX_STANDARD}")
 
+if (LEVEL_SIZE STREQUAL "8")
+    add_definitions(-DLEVEL_U8)
+elseif (LEVEL_SIZE STREQUAL "16")
+    add_definitions(-DLEVEL_U16)
+elseif (LEVEL_SIZE STREQUAL "32")
+    add_definitions(-DLEVEL_U32)
+elseif (LEVEL_SIZE STREQUAL "64")
+    add_definitions(-DLEVEL_U64)
+else ()
+    message(FATAL_ERROR, "Invalid level size was given.")
+endif ()
+
 include(CmakeConanSetup.cmake)
 SetupConan()
 
diff --git a/CmakeConanSetup.cmake b/CmakeConanSetup.cmake
index f3449d4..3b7b36c 100644
--- a/CmakeConanSetup.cmake
+++ b/CmakeConanSetup.cmake
@@ -11,10 +11,23 @@ function(SetupConan)
 
         if (NOT WINDOWS)
             execute_process(COMMAND conan install ${CMAKE_SOURCE_DIR} --install-folder=${CMAKE_BINARY_DIR} --build outdated
-                    -s compiler=clang -s compiler.libcxx=libstdc++11 -o *:shared=True -o *:staticC=${CONAN_STATIC_C} -o AngelScript:link_std_statically=True)
+                    -s compiler=clang
+                    -s compiler.libcxx=libstdc++11
+                    -o *:shared=True
+                    -o *:staticC=${CONAN_STATIC_C}
+                    -o AngelScript:link_std_statically=True
+                    -o CreatureLib:level_size=${LEVEL_SIZE}
+                )
         else ()
             execute_process(COMMAND conan install ${CMAKE_SOURCE_DIR} --install-folder=${CMAKE_BINARY_DIR} --build outdated
-                    -s compiler=gcc -s compiler.libcxx=libstdc++11 -s os=Windows -o *:shared=True -o *:staticC=${CONAN_STATIC_C} -o AngelScript:link_std_statically=True)
+                    -s compiler=gcc
+                    -s compiler.libcxx=libstdc++11
+                    -s os=Windows
+                    -o *:shared=True
+                    -o *:staticC=${CONAN_STATIC_C}
+                    -o AngelScript:link_std_statically=True
+                    -o CreatureLib:level_size=${LEVEL_SIZE}
+                )
         endif ()
     endif ()
     include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
diff --git a/src/Battling/Library/ExperienceLibrary.cpp b/src/Battling/Library/ExperienceLibrary.cpp
index 20865a9..f20b3a8 100644
--- a/src/Battling/Library/ExperienceLibrary.cpp
+++ b/src/Battling/Library/ExperienceLibrary.cpp
@@ -3,7 +3,7 @@
 #include "../PkmnScriptHook.hpp"
 #include "../Pokemon/Pokemon.hpp"
 
-static inline uint32_t CalculateDynamicExperience(uint8_t level, float v1,
+static inline uint32_t CalculateDynamicExperience(level_int_t level, float v1,
                                                   ArbUt::BorrowedPtr<CreatureLib::Battling::Creature> op,
                                                   ArbUt::BorrowedPtr<CreatureLib::Battling::Creature> faintedMon) {
     float a = 2 * level + 10;
diff --git a/src/Battling/Library/ExperienceLibrary.hpp b/src/Battling/Library/ExperienceLibrary.hpp
index 1e61c54..8225e75 100644
--- a/src/Battling/Library/ExperienceLibrary.hpp
+++ b/src/Battling/Library/ExperienceLibrary.hpp
@@ -2,6 +2,8 @@
 #define PKMNLIB_EXPERIENCELIBRARY_HPP
 
 #include <CreatureLib/Battling/Library/ExperienceLibrary.hpp>
+#include <CreatureLib/Defines.hpp>
+
 namespace PkmnLib::Battling {
     class ExperienceLibrary : public CreatureLib::Battling::ExperienceLibrary {
     public:
diff --git a/src/Battling/Pokemon/CreatePokemon.hpp b/src/Battling/Pokemon/CreatePokemon.hpp
index ae42239..8882853 100644
--- a/src/Battling/Pokemon/CreatePokemon.hpp
+++ b/src/Battling/Pokemon/CreatePokemon.hpp
@@ -9,7 +9,7 @@ namespace PkmnLib::Battling {
         ArbUt::BorrowedPtr<const BattleLibrary> _library;
         ArbUt::StringView _species = ""_cnc;
         ArbUt::StringView _forme = "default"_cnc;
-        uint8_t _level;
+        level_int_t _level;
         std::string _nickname = "";
 
         ArbUt::StringView _ability = ""_cnc;
diff --git a/src/Battling/Pokemon/Pokemon.hpp b/src/Battling/Pokemon/Pokemon.hpp
index dcf94fe..8a72893 100644
--- a/src/Battling/Pokemon/Pokemon.hpp
+++ b/src/Battling/Pokemon/Pokemon.hpp
@@ -20,7 +20,7 @@ namespace PkmnLib::Battling {
     public:
         Pokemon(ArbUt::BorrowedPtr<const BattleLibrary> library,
                 const ArbUt::BorrowedPtr<const Library::PokemonSpecies>& species,
-                const ArbUt::BorrowedPtr<const Library::PokemonForme>& forme, uint8_t level, uint32_t experience,
+                const ArbUt::BorrowedPtr<const Library::PokemonForme>& forme, level_int_t level, uint32_t experience,
                 uint32_t uid, CreatureLib::Library::Gender gender, uint8_t coloring,
                 ArbUt::BorrowedPtr<const Library::Item> heldItem, const std::string& nickname,
                 const CreatureLib::Library::TalentIndex& talent,
diff --git a/src/ScriptResolving/AngelScript/TypeRegistry/Library/RegisterGrowthRateTypes.cpp b/src/ScriptResolving/AngelScript/TypeRegistry/Library/RegisterGrowthRateTypes.cpp
index f80ed81..6da3b08 100644
--- a/src/ScriptResolving/AngelScript/TypeRegistry/Library/RegisterGrowthRateTypes.cpp
+++ b/src/ScriptResolving/AngelScript/TypeRegistry/Library/RegisterGrowthRateTypes.cpp
@@ -23,7 +23,7 @@ static uint8_t CalculateLevel(const CreatureLib::Library::GrowthRateLibrary* obj
     return obj->CalculateLevel(str, experience);
 }
 static uint32_t CalculateExperience(const CreatureLib::Library::GrowthRateLibrary* obj, const ArbUt::StringView& str,
-                                    uint8_t level) {
+                                    level_int_t level) {
     return obj->CalculateExperience(str, level);
 }