Sega Master System / Mark III / Game Gear
The evil Gylend has transformed the five Earth Command Troopers into red balls and cast them into the time vortices to be guarded by various historical boss nasties. You (and a friend, this being a two-player game) must travel the chrono-streams to each trooper's location in space and time, blast away at the monsters and warriors of the period then nuke the head beat to release your comrade. You begin with bazookas but, if you collect the right icons, you can stock up with three-way missiles, rocket launchers and speedups.
If you were ever a lover of the (rather obscure) Time Soldiers coin-op, you pleased to hear that this is a pretty good conversion. The graphics are dinky, but nicely defined, and the Commando-style action is fun - even more so with two players. Shoot 'em up fans should certainly get their fair share of jollies out of this.