diff --git a/CMakeLists.txt b/CMakeLists.txt
index ad9c9029..58216a19 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -644,6 +644,7 @@ add_executable(${CRYMP_CLIENT_EXE} WIN32
 	Code/Launcher/MemoryPatch.cpp
 	Code/Launcher/MemoryPatch.h
 	Code/Launcher/Resources.h
+	Code/Library/BuddyAllocator.h
 	Code/Library/CPUID.cpp
 	Code/Library/CPUID.h
 	Code/Library/CrashLogger.cpp
diff --git a/Code/Library/BuddyAllocator.h b/Code/Library/BuddyAllocator.h
new file mode 100644
index 00000000..3138a547
--- /dev/null
+++ b/Code/Library/BuddyAllocator.h
@@ -0,0 +1,63 @@
+#pragma once
+
+#include <bit>
+#include <bitset>
+#include <cstddef>
+#include <memory>
+
+template<std::size_t ARENA_SIZE_BYTES>
+class BuddyAllocator
+{
+	static_assert(std::has_single_bit(ARENA_SIZE_BYTES));  // make sure ARENA_SIZE_BYTES is a power of two
+
+	static constexpr std::size_t SMALLEST_CHUNK_SIZE_BYTES = 16;
+
+	static constexpr std::size_t GetTreeOrder()
+	{
+		constexpr std::size_t maxChunkCount = ARENA_SIZE_BYTES / SMALLEST_CHUNK_SIZE_BYTES;
+
+		return (sizeof(std::size_t) * 8) - std::countl_zero(std::bit_ceil(maxChunkCount));
+	}
+
+	static constexpr std::size_t GetTreeSize()
+	{
+		std::size_t result = 0;
+		std::size_t multiplier = 1;
+		for (std::size_t order = GetTreeOrder(); order > 0; order--)
+		{
+			result += order * multiplier;
+			multiplier *= 2;
+		}
+
+		return result;
+	}
+
+	static constexpr std::size_t GetTreeUpperPosBound()
+	{
+		return 1 << GetTreeOrder();
+	}
+
+	std::unique_ptr<std::byte[]> m_arena = std::make_unique<std::byte[]>(ARENA_SIZE_BYTES);
+	std::bitset<GetTreeSize()> m_tree;
+
+public:
+	void* Allocate(std::size_t bytes)
+	{
+		// TODO
+		return nullptr;
+	}
+
+	bool Deallocate(void* pointer)
+	{
+		std::byte* chunk = static_cast<std::byte*>(pointer);
+
+		if (chunk < m_arena.get() || chunk >= (m_arena.get() + ARENA_SIZE_BYTES))
+		{
+			return false;
+		}
+
+		// TODO
+
+		return true;
+	}
+};