dtgreene: The game uses a split-screen display, or alternatively uses two separate screens. On one screen is a first person shooter, which the player controls with the keyboard. On the other screen is a 2D platformer, which the player controls with the mouse. The player must play those two games simultaneously; a death in one game counts as a death in both, forcing you back to the last checkpoint in both games.
Dalswyn: Why stop there when you can add a third game (another platformer) using TrackIR for head motions and then a fourth game (puzzle game) using voice commands?
And then add a timer for every level, forcing you to start over if you're not fast enough?
Actually, I thinkg the game with voice cmmands should be a fast-paced game where precision is important, and perhaps intentionally use a bad speech-to-text library to handle that input.
toxicTom: On-topic: What about an RPG which allows for countless variations of character builds, which are all more or less fun to play - until you hit the wall because after dozens of hours there is a boss which can only be defeated by a certain build - and there is no re-spec option?
I'm sure games like this exist, the first Gothic - in a milder sense - guilty of this (archer build is powerless against final boss).
I have sort of encountered that in SaGa 2, where you suddenly encounter a boss that is immune to offensive magic, which is otherwise a very good offensive option in that game.
However, SaGa 2 is designed so that a respec-like feature is not needed to change builds; a high score in one attribute doesn't hurt the growth for others (except for robots, who can just get the equivalent of a respec by changing their equipment), and there's a gun you can buy that hits reliably for decent (not great, but enough for this boss) stat-independent damage, even if your stats are low.
Also, in the Mana series:
* There is one boss that I wasn't able to beat at starting Power; I had to raise Power once to defeat it. This boss appears mid-way through the game. (One Power increase was enough, and spells work on every other boss, so this was the only hiccup on my pure mage attempt. Also, getting Nuke early wasn't a problem.)
* In Sword of Mana (a remake of FFA, but completely redoes the game mechanics and is basically a different game), if you play as the girl and go full mage, you reach a boss early on you can only do 1 damage to at a time. I was able to beat that boss, but it took way too long, all because of poor balancing. (That boss should have been given lower magic defense and perhaps a weakness to the element you have at the time to make that setup viable for that boss.)