Finish Splinter Cell: Chaos Theory

Sam Fisher in 2002, with light and shadow as the whole mechanic.

The last Splinter Cell, and the one that let you play it loud.

Sam Fisher in Indonesia and Paris, and the asymmetric spies-versus-mercenaries multiplayer nothing has matched since.

Fisher undercover inside a terrorist cell, with a trust meter that makes every mission two missions.

Mark and execute, interrogations in real rooms, and objectives projected onto the walls.

Ezio Auditore in Renaissance Florence and Venice; the game that made the series.

Ezio in Rome, an assassin guild and the first multiplayer; the tightest Assassin's Creed.

Hack San Francisco with DedSec; the sequel that found the fun.