Players usually have to roll two d20 dice when their character is undertaking a task. Success happens with low rolling, and success is counted. Task difficulty is rated as successes: It may take two successes to succeed in this task and four successes to evaluate success on that task.Star Trek Online (MMORPG) is a massive online role-playing game developed by Cryptic Studios based on the Star Trek franchise. The game is set in the 25th century, 30 years after the events of Star Trek: Nemesis.