Many　three-dimensional　(3D)　games　possess　sophisticated　gaming　worlds　and　most　of　such　worlds　are　constructed　via　a　3D　triangle　mesh,　including　landform,　buildings,　vegetation　and　other　static　objects.　Some　games　focusing　on　natural　outdoor　environments,　such　as　many　RPG　(Role-playing　game)　and　MOBA　(Multiplayer　Online　Battle　Arena)　games,　adopt　the　height　filed　to　demonstrate　a　landform,　while　some　games　focusing　on　indoor　types,　such　as　many　FPS　(First　Person　Shooting),　TPS　(Third　Personal　Shooting　Game)　and　ACT　(Action　Game),　build　basic　indoor　environments　via　a　constructive　solid　geometry　(CGD)　technology.　Since　the　unprecedented　success　of　Minecraft　in　2009,　the　voxel　has　become　another　feasible　manner　to　construct　a　gaming　world.