Skill Mod Card Packs offer the player at least one random skill mod from a selection of five cards except for the Mystery Skill Pack. The mod awarded is of a random rating with each pack also having a possibility of offering powerups or Cash. All three of the Skill Mod type card packs were made available for purchase with ingame cash during the End of the World event. Their equivalent Speedboost purchase options were also removed. The price of the Mystery Skill Pack was lowered from File:Dollar icon.png100,000 on May 22nd, 2015 as part of the same event as the three Skill Mod type packs.