A toy water gun system includes a primary water gun having a housing, a pressurizable reservoir, an outlet nozzle in flow communication with the reservoir, and an actuating trigger, with the primary toy water gun adapted to discharge an output stream of water through the outlet nozzle in response to actuation of the trigger. The housing includes a first receiving area and a second receiving area, with each receiving area having an output port in flow communication with the reservoir via a conduit, a pair of valves to control flow through the conduits. A first detachable water toy mounts to the housing at the first receiving area and receives water from the reservoir, and a second detachable water toy mounts to the housing at the second receiving area. The first and second detachable water toys are selectively removable from the primary water toy for use.