My Monon Color arrived Saturday and I have been using it since.
It has start, select, A, B, L, and R buttons and a D-Pad. The speakers are in the front where the black lines are next to the select and start buttons.
On the back, there is nothing except for the cartridge slot and the battery case. It takes three AA batteries.
In the package I got, it came with four games (from left to right), one fighting, two puzzle, and one "action" game.
The first game is an impossible fighting game. The enemies are stacked against you even on the easiest level. I've only managed to beat the AI once and it felt like an accident.
The next game is a bejeweled-like game where, while holding the A button you match multiple of the same color together to create matches. Then an attack is sent against the computer.
The third game is bejeweled. I have probably played it the most as there is a lot of satisfaction when you beat a hard enemy. There is a lot of grinding needed in this game to build up your level to beat the next enemies, but it is fun.
The final game, the "action" game is a side-scrolling beat 'em up. B is the special move which can be changed by pressing L or R.
In my opinion, the games from worst to best are, the fighting game, the bejeweled-like puzzle game, the bejeweled clone, the beat 'em up.
The select button does not select anything. It just changes the brightness, the sound, and the music
Here are some comparison pictures:
Start just pauses the game
Sound quality is okay, but volume is great.
Brightness is great as well
No english feature