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Download PROTO MOD APK v1.21.0 (Premium Unlocked)


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You are now ready to download PROTO - Circuit Simulator for free. Here are some notes:

  • Please check our installation guide.
  • To check the CPU and GPU of Android device, please use CPU-Z app

Download FAQs

This is an installer developed exclusively by https://www.modplay.co . We attach the Cache, OBB file to the single APK file, which helps users to install it quickly and easily.
Since we use caching and the server has special sync functionality, sometimes some newly posted games will have broken links for a few minutes. You can try again in about 5-15 minutes. If after a long time the download link still fails, this is definitely a mistake in the editor’s link import process (possibly because he is sleepy)
We always do thorough testing before posting games and apps. Please read carefully before the instructions that include “MOD Info?” “Important!” in the content. If it still doesn’t work, report it back to us
OBB is like the game’s DLC, you just need to unzip it to the “Android / obb” folder in the memory. The game will work properly. We rarely post an OBB, however, as it is already integrated into the INSTALLER APK as we mentioned earlier.How to install game have APK and OBB1. Download apk and OBB of the game2. Extract the OBB, copy the OBB folder to the “Android/obb” path. A correct OBB path would look like “Android/obb/com.madfingergames.legends”3. Install APK file and run
This usually happens when you already have the original version or version downloaded on another website on your device. To fix it, please delete the app or game (remember to backup data if necessary), then reinstall our apk file