I guess an SD card swap is too slow XD? Though looking at the growth of ram on the original pi1 :
it isnt completely far fetched to think that a later board revision might meet RAM specs...
Also it seems theyve done some multithreading work :
http://www.indiedb.com/games/unvanquish ... s-alpha-20
Some work has been done on multi-threading, allowing the renderer to run in a separate thread. This will help with complex scenes, giving a frame-rate boost (possibly as much as 40%) because it allows the game to get on with processing your input and talking to the server while the display is being updated – so long as you have a multi-core CPU (which you probably do). To enable it, /set r_smp 1 then restart the client.
Yeah x86 --> ARM v7 would need optimization i guess(SSE-->NEON ??) Maybe this is more of pi2's league?: