Prophour23 is a fast-paced, replayable real-time strategy. It's designed for short, quick plays. A single playthrough will take you about 15 minutes, if you're good. But the next one will be different. And another one as well.
Only keys listed as "Region Free" can be redeemed in any country.
EU Keys can only be redeemed within the EU.
US Keys can only be redeemed within the USA.