The Steam Summer Sale of 2015 has arrived, bringing deep discounts on games and other software titles. And if you’re looking to get the most bangs for your buck, you’ll have to act fast.

As with previous years, the Steam Summer Sale offers several deals on games that change on a daily basis or even as frequently as twice a day. Some of the games currently on sale include "Grand Theft Auto 5" “Hotline Miami 2: Wrong Number,” “Homeworld Remastered Collection,” “Halo: Spartan Assault” and the “Sniper Elite” franchise. But these will be rotated out at 1 p.m. EDT/10 a.m. PDT.

Beyond daily deals and flash sales, Steam is also offering additional discounts, which can be obtained by playing its “Monster Summer Game” mini game. As Steam users hit certain goals, they will unlock a 48-hour deal on a new game.

While it may be tempting to purchase a discounted game not listed on the Steam Summer Sale front page, it’s often better to wait for them to show up as that’s usually when they’re offered at the cheapest price. But if you already pulled the trigger, this time you have a little bit of a safety net.

As long as you haven’t played your purchased game for more than two hours and it was purchase within 14 days, Steam will give you a refund if you ask for it via customer support. The same also applies to downloadable content (DLC) as long as it isn’t consumable -- such as one that levels up a character. Though Steam notes that it can revoke a user’s refund privilege if they appear to be abusing it, the company explicitly says it’s okay to use the system to request a refund on a title that was purchased right before a sale and then rebuy it for the sale price.

First launched in 2003 for PCs, Steam has gradually expanded its support for Mac OS X, Linux and SteamOS, its own operating system. The company also has an iOS and Android app, so you don’t necessarily need to be at your computer to purchase your favorite game.