Sacrifice

You start with a party of 7 people with different skills. There are 7 obstacles to overcome (including the final boss) and in each turn you have to sacrifice one of your people. You have to make sure that a) the sacrifice isn't in vain (i.e. the rest of the party survived), b) you did select the right character for the job (i.e. you won't need it further in the game). Takes a few playthroughs to get it right but it's worth it! (from Nekogames, author of Hoshi saga, Piscal, Underworld trip, SCRXXX AS3 and so much more!)