This is a temple I made for a challenge for ancient civilization and I think this would work great for a Adventure Game. My video I included will show you how much work I put into this creation. What you get with this is just the temple so you can put this right into your game engine. The stuff you saw in the video I made was for the challenge...
OBJ (OBJ, filesize: 9.06 MB), FBX (Autodesk FBX, filesize: 2.96 MB), BLEND (Blender, filesize: 186 MB)