A few two-player Tabletop games you may enjoy.
Wil Wheaton

I’ve really enjoyed playing Lost Patrol with my 6 year old son:

The game forces the Marines to split up to be successful in searching for a downed vessel, but this plays very well into the aliens strategy. The marines are going to die at some point and they rarely win, but it’s a very low maintenance, tense game easily played in 30 minutes. When the Marines do occasionally win it’s an awesome feeling of overcoming the odds.

Bit of a pain to glue the miniatures, but some people may enjoy that aspect.