A PC game checker tool evaluates a computer's specifications against a game's system requirements, assessing components like the processor, graphics card, RAM, and storage capacity. Users can enter a game's name to see if their PC meets the minimum and recommended specifications, either through automatic scans or manual input. These tools help save time and money by preventing the download or purchase of incompatible games, avoiding poor performance, and providing insights for potential upgrades. The process involves visiting a website, selecting a game, scanning the system or inputting specifications, and receiving results quickly. Tips for gamers on a budget include focusing on games with lower system requirements, adjusting game settings for better performance, maintaining system cleanliness, and prioritizing upgrades to RAM or the graphics card.