There were some lovely gaming demakes last week that re-imagined modern games on PS1. This week I discovered Restrospecs, a photo app that simulates just about every old system you can think of. Or takes pictures of the cat.
The iOS app covers a range of systems from Spectrum ZX81s and BBC Micros through to Game Boys and MSX - that's Bioshock on the BBC Micro up there for example. Here's a few games I've de-made with it: