A study of older Veterans (60-85 years old) who have 1) a history of repetitive mild TBI or at least one moderate TBI and 2) subjective cognitive complaints. Participants will be randomized to one of three conditions for 4 weeks: Project:Evolution (EVO) multitask video game, EVO words video game, or an assessment only control condition. Participants will complete assessment visits at baseline, post-intervention (1 month after baseline), and 3 months post-intervention (4 months after baseline).