Amazon PC download sale: Cheap Sonic Generations, Tropico 4, Dungeon Defenders, more

Ever vigilant to claim every last cent of your holiday budget, Amazon is running a sale on various PC downloads. Today's sale features several Sega titles, the highlight of which is probably Sonic Generations for a paltry $15. You can also snag the Sega Power Pack, which bundles together Sonic Generations, Renegade Ops, lots of Total War titles and tons of Genesis classics for $50 – over $200 off the normal price.

Some notable non-Sega titles include Tropico 4 for only five bucks or the excellent Dungeon Defenders for just $7.50.