How To Speed Up Or Slow Down Offline PC Games [MUO Gaming]

Craig Snyder 22-01-2013

control game speedThis article isn’t for those overachieving, goody-two-shoes gamers with every achievement unlocked in their favorite platformer. Nope, this would be better received by those of you who struggle every day to get past that one level. It may even be nice for some of you who want to put a little extra “speed” in your speedruns.


Sometimes you need to skip past the annoying, replayed cutscenes or put your game in slow motion to really have enough time to react to what’s going on in front of you. Could it be considered cheating? Maybe, but sometime you got to do it! For those of you who are interested in learning how to speedhack Windows processes, specifically for benefit in games, read on.

L. Spiro’s Memory Hacking Software

L. Spiro’s MHS (as I’ll abbreviate from here on) is my favorite Windows memory editor. Dumbed down, a memory editor is a piece of software that will allow you to tinker and tamper with other processes that are running on your system. For the purpose of speed hacking, no memory editing knowledge is required. MHS should work on any version of Windows from XP onward.

control game speed

Be advised that most antivirus software will detect MHS as malicious software (because of its nature). This is a false positive and can be ignored. MHS is completely clean.

Pick a Game

This step is simple. At this point, as you’ve got MHS up, load up a game. Be aware that attempting to apply speedhacks to a game that is server-based (such as any MMO) is not the best idea and could even get you banned. Keep all of your speed-altering endeavors to games that are single-player and can run offline for the best results.


Load The Process In MHS

With the game window up, head back to the MHS interface. Under File, go to Open Process. You need to know the process name of the game that you’re running, which (if you’re unsure of) can be found via Task Manager.

speed up pc games

The Windows column should help enough to pinpoint the game’s process in most situations.

speed up pc games


As you can see, finding The Binding of Isaac’s process was very easy. Just click OK from here.

Apply Speed

Under the Tools menu, go to Speed Hack. Here’s where you apply the process speed.

control game speed

As you can see it explained in that window, you need to enter a numerator and denominator. We all learned those in grade school, so I expect that will be easy to figure out for all of you. If you’re trying to slow down the process, then your denominator needs to be the greater, and if you’re trying to speed it up, then the numerator needs to be the greater.


What you see in the above screenshot will half the speed of the game’s process.

Test It Out

Run the game. If you’ve applied more speed, are you zipping around like mad? If you’ve slowed everything down, do you suddenly feel like you’ve downgraded video cards? Well then, it’s working. Use this to your advantage! Speed hacking through monotonous random encounters in Final Fantasy VII Final Fantasy XV Is Finally Out! Is It Worth Buying? Fans have waited for Final Fantasy XV since its announcement ten years ago. Let's find out if it's lived up to its reputation, and if you should buy it. Read More probably saved me hours of useless gameplay.

Be advised that this method is not going to work perfectly with every single game. Some games are tricky with their containers or run in multiple different processes. For the simplest of games though, it should be a cinch. MHS has a lot of interesting additional features that I’ll allow you to explore on your own. You can even set up hotkeys to toggle your speedhacks on and off. It’s very useful.

Has this tip helped you? In what game can you see speeding up or slowing down the gameplay be hugely helpful? Let me know in the comments!


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  1. Tony Belcher
    July 4, 2019 at 8:04 am

    Wow this solved my problem! And not for the first time, using a suggestion from this site. You guys really are the duct tape of cyberspace. Ta.

  2. drhouse
    May 19, 2017 at 11:09 am

    I was doubtful, but it worked for slowing down Bayonetta PC... it makes the game more fun and fair on extreme difficulty settings. I wrote an autohotkey script to hotkey different speeds until I saw in the article you can program hotkeys, gonna test it

  3. TheFearlessDeath500
    July 16, 2016 at 1:39 pm

    I don't think it worked because when I click OK in the Speed Hack thingy, it says (Unable to apply speed hacks.). Is this a glitch?! I try to use Undertale.exe (No, not that CreepyPasta game, the real thing) and it didn't work! Please help me out!!

  4. Mohammad
    June 2, 2016 at 9:34 am

    It worked greatly thank u very much

  5. Andre
    January 16, 2016 at 4:26 pm

    Dude, i slowed it down, but sound didn't get slower, what do i do?? Help me.

  6. Earl John Dela Cruz
    January 27, 2013 at 11:29 am

    Actually,using Cheat Engine is more easier. But also, you can use this.

    • unnamednamer
      June 17, 2016 at 3:29 pm

      cheat engine's speed hack doesnt work on some if not most offline games anymore

  7. Todd Troutt
    January 22, 2013 at 1:48 pm

    Great tips! I'm going to try this out.

  8. Chew Jian Yue
    January 22, 2013 at 11:52 am

    I don't think this work very well. Can someone convince me?

  9. Alex Perkins
    January 22, 2013 at 10:50 am

    Nice, this could save me countless hours walking about in Fallout NV.

  10. Aaron Chung
    January 22, 2013 at 9:41 am

    try speeding up racing games... you'll die...

  11. vicky
    January 22, 2013 at 8:25 am

    interesting! i think i will give this a try!

  12. Switchblade Rebirth
    January 22, 2013 at 7:14 am

    The same can be done with Cheat Engine(

    I often use Cheat Engine on the Modern Warfare 2 and 3 timed challenges. Helps getting past veteran level challenges with ease at the cost of time.