Set your spacecraft's fuel load and launch profile, then hit launch and fly the full journey — liftoff, Earth orbit-raising, Trans-Mars Injection, the long cruise, and Mars Orbit Insertion. Get it right and you'll enter Mars orbit like the real Mangalyaan did in 2014.
Tip: too little fuel and you'll fall short of Mars; mistime the burn and you'll sail right past it — just like the real challenges ISRO had to solve.
This simulation follows the actual mission profile: Mangalyaan didn't fly straight to Mars. It first circled Earth in ever-larger orbits to build up speed, then fired its engine for Trans-Mars Injection on 1 December 2013, coasted for about 10 months across ~650 million km, and finally braked into Mars orbit on 24 September 2014.