Do you know other cool sandbox games? I've played TPT, Minecraft, Golems Game (that's one kinda cool, I suggest you to try it), Algodoo a.k.a Phun, ScriptBlocks and I am kinda bored with them. I am mostly for simulation sandboxes/engineering ones as you might notice (I play minecraft only because of mods like Powercraft, pure redstone is just too weak).
@EqualsThree(View Post) What is meteroid? You don't mean metroid (Newer games are metroid prime) do you? Forgive me if It seems as though I have no idea what Terraria is about... I've never played it, nor do I know what it is about
Also, the good old Garry's Mod shall provide you with hours of entertainment, more so if you're with a friend. Then stuff gets awesome. Wiremod is a must for gmod. Imagine: Automated invisible stalker bots tracking down your friends while you chill in your bunker protected by automated turrets and a self-destruct system.
Garry's Mod is not free, I am searching for a 3-D physics simulator, blender could do it but it always crash I don't know why... I think because my video card...anyway I like OE-Cake!
@Dingolo(View Post) 3D Physics simulator? Why not a real-time top-notch high-end physics engine and game creator like CryEngine 3? It probably is too high-end, but you did ask for an alternative to Blender...