You pick either Red or Blue and must defeat the other player before using either of two portals to take on Yellow. It's basically a 'Hot Spot' variant, but easier and quicker, or maybe it's harder and longer? I dunno. If you like 'Hot Spot' you might enjoy this one.

An evil warlock hailing from a dark island wants your lands. Can you settle things with your neighboring Kingdom and deal with this new foe?