> For the complete documentation index, see [llms.txt](https://k3k.gitbook.io/whitepaper/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://k3k.gitbook.io/whitepaper/tokenomics/usdtkt/eco-system.md).

# Eco-System

TKP is used to access all K3K contents, including building construction, building upgrades, character/item purchase, and character/item synthesis and reinforcement. Upgrade is essential because challenging to top rankers gives you a greater chance to swap TKP to $TKT. The powerful burn system unique to the SLG genre will make K3K's tokens more valuable, and players will benefit from it.