The five Time Force Rangers travel though time to stop enemies. You can play as the Pink, Green, Yellow, Blue or Red Time Force Rangers. The Quantum Ranger is playable but only if your Ranger finds a Quantum Morpher and all 7 secret items hidden in each level. When the bosses grow to gigantic size the Time Force Megazord Mode Blue/Red, Time Shadow Megazord and Q-Rex (When you play Quantum Ranger) are Playable. Source: Wikipedia, "Power Rangers Time Force (video game)", available under the CC-BY-SA License.