This year's Doom is an excellent first-person shooter, and if you've been waiting for it to go on sale--and have missed the multiple times it's been discounted--then Amazon has your back. It currently costs $25 on consoles and $35 on PC.
You can visit Doom's page for each platform with the links below:
The discount for PC is only available for physical copies. It's not clear how long these deals will be available for, so it might be best to act sooner rather than later if you want to pick it up at the discounted price.
Doom received a score of 8/10 in GameSpot's review. Critic Peter Brown said, "The loud and chaotic campaign is Doom's strongest component. It's straightforward and simple, but it serves its purpose: to thrust you into increasingly dire scenarios fueled by rage and the spirit of heavy metal."