Rainbow Six on Game Boy Color is way more tactical than you'd expect from a handheld shooter. You're running a counter-terrorism squad, and half the game happens before you even pull the trigger—scouting maps, assigning breach points, timing synchronized takedowns. Mess up the planning phase, and your team gets shredded in seconds.

The pixelated graphics somehow make the tension worse when you're creeping through corridors, waiting for some terrorist to pop out. Pro tip: silenced MP5s work better than shotguns unless you want the whole building to know you're coming. It's janky by modern standards, but there's something satisfying about nailing a perfect no-alert mission with your pre-planned routes.