Steam will also have the game on sale but reportedly only at 40% off. I would just wait and see because Amazon might try to beat the price at both sites on their Late Breaking Game Deals page. They had it on their site for $6.99 (72% off) on December 1st for Day 3 of their Game Downloads 19 Days of Deals sale.
- Nuclear Dawn = $7.99 / £5.10
This game uses Steamworks, so you’ll have to activate it on Steam no matter where you buy it from.
It’s a RTS / FPS hybrid game. Similar to Natural Selection. Sounds like it has a learning curve and the community is kind of small, but a big update recently came out for the game. It has a 71/100 metascore.