Complex sentence: Although they are often considered to be the first joysticks, Kotok did not accept credit for coinventing them with Saunders because he thought there were similar controllers in use at the time in games such as Tennis for Two and at NASA or another organization.
Split into simpler sentences: Although they are often considered to be the first joysticks, Kotok did not accept credit for coinventing them with Saunders. He thought there were similar controllers in use at the time in games such as Tennis for Two and at NASA or another organization.