A method of searching for videogame activities comprises receiving a request comprising a target time for a first player within which to complete an in game activity, accessing a record of the current game state for one or more games playable by the first player, obtaining timing data for elapsed times between validated pairs of game states that includes an accessed current game state and a candidate next game state, and selecting one or more of the plurality of candidate next game states playable by the first player, responsive to the target time and the obtained timing data.