In Outnumbered you play as a regular adult who just can't go past the opportunity to play games. Sadly, this also involves children's games, whether it be a casual game of football or a 1 v 1 in Call of Duty between two seven year olds. The game would consist of cut scenes, in which the player would be walking down the street and find a group of children playing games. The game would then transition into a minigame, in which the player would play against the groups of children. The children would be smaller and weaker than the player, however would also have advantage in numbers. They would team up to create a mob, and try to overpower the player by teaming up and coming from all angles. In some rare cases the children would climb onto each other, forming a giant humanoid similar to Voltron. This humanoid would be much larger than the player, and also much more powerful. The player would need to avoid its giant footsteps in order to not be crushed.

Games like football would play out similar to fifa, while the other games would be a simulated version of them. For example, "Call of Duty" would be a first person shooter played on a tv, with a view of the room around it too.

Image from http://simpsons.wikia.com/wiki/Adults/Kids retrieved 16/8/2016