These last elements have in part enabled enabled widespread copyright theft within the country, not just of video games but other works.[44] The relatively lax copyright rules enables clones based on reskinning an existing game, replacing the art assets with new ones but otherwise not changing the game's code.[2] China's copyright code also makes it difficult to take action on modification of copyrighted characters as these are not explicitly written into Chinese law, which has allowed widespread unlicensed use of others' intellectual property in Chinese games.[44][45] Though the government has introduced more stringent copyright laws in recent years and harsher penalties for violations, video game clones still persist in China.[44]