Actually, according to Barron's, the preterit indicative should have an accent (jogámos). I note, however, that DL didn't use one. It would be nice if someone from DL would explain their thinking here. .
Does jogamos here means playing a game, playing a musical instrument or both? (I thought that for playing a game, the proposition 'em' is required. But as there's no object in this sentence I'm not sure where it'll go)