So apart from stuff I’ve actually released I sometimes do technical research on games in general. Past year or so I’ve made a fair amount of symbol maps to varying degrees of completion for various GB/GBC games, in the hopes of either colorizing or translating.
Also now that Mesen’s been out there as a multi-system emulator with its God-tier debugger, I’ve been meaning to really tackle something with the prowess it offers, mainly for GBA or WonderSwan since it got those this year and those platforms do tickle my fancy.