The Sega Ages version, whose disc also includes Treasure's Gunstar Heroes and Dynamite Headdy, exceeds the Mega Drive's intrinsic sprite display limit, which eliminates slowdowns or missing graphics during busy scenes (e.g. The game was playable in America on the Sega Channel cable service and has been reissued for PlayStation 2 as part of the Sega Ages Treasure Box disc. The game was released in Japan and Europe, but not physically in the US (one of the few to be released in this pattern), but it can be rather expensive due to its rarity in either region. After deleting all my European ROMS and reinstalling all my games with USA ROMS these issues went away, since the speed increase only applies to European ROMS.Alien Soldier (エイリアンソルジャー?) is a side-scrolling run and gun video game developed by Treasure for the Sega Mega Drive.

'Another World' ( called 'Out of this World' in the USA) is a good example for this. This runs fine on the stock ROMS, however some European ROMS do not run at native 50Hz and will increase the speed another ~15% on top of the native Hz that they are already using. They did something to the European mini so that it increases the speed with ~15% so that it auto converts European default 50hz to USA 60hz. Long story short, the mini does some thing to certain European ROMS which messes up the speed. They perform better then European ROMS on the mini. Use this website to see which version ROM is compatible with your Mini, it will save you a lot of time and ' trial and error' figuring out which installed ROMS will work properly.Īnother tip i can give you is to use USA roms as much as possible even if you live in an European region. Luckily the in-game language is English, even in the Japanese version.

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