Started first time, no worries in MirageOs on my Ti-84+
For anyone who wants a great game in 3-D, this is a great choice!
Gameplay - 9/10
Easy to start off, reminiscent of DOS-esque Doom games in movement and style. Not much to complain about, but enemies seem to blend into the walls occasionally.
Graphics - 10/10
First class graphics, at least for a calculator that is!
Reasonably smooth, may be irritating for some people but you quickly get used to it.
Ease of use - 10/10
Opened without a fuss, controls are well laid out and are easy to use. Reference of the manual was necessary, but i do that anyway with all games
Depth - N/A
Havent gone too far in, so not much to say here
Overall score - 10/10
Unlike some other games, which tend to be fussy, require tedious installations of software and other ancillaries, Gemini does a fine job of keeping everything simple and provides an excellent game to amuse the entire row of students in any maths class!