Abstract: A computer game is rendered in a graphical user interface. A set-up view is rendered for selecting one or more game lanes from a set of game lanes. User input is received for selecting one of more one or more game lanes of the set of game lanes. A game initiation input is received, and a gameplay sequence is rendered by randomly populating each game lane with game blocks, until a termination condition is met, based on at least one block generation probability associated with the game lane. Upon termination of the gameplay sequence, a gameplay outcome is determined dependent on whether any selected game lane has reached a threshold number of game blocks.