Kill Monsters to Save Princess

Kill Monsters to Save Princess is a solo wave-defense action RPG on Roblox by solo developer XiaoChen where players fight through 120+ escalating enemy waves to rescue a kidnapped princess. Launched in January 2022, it has accumulated 76.7 million visits with a 97% approval rating from nearly one million voters - one of the highest ratios in the platform for its visit range.

The premise is a classic action narrative: you are a warrior whose fiancee was taken by monsters. You spawn on a battle map, waves close in from all sides, and you spend earned currency between attacks to stay ahead of the escalating difficulty. Surviving long enough unlocks the princess herself as a combat companion:

• ⚔️ Fight through 120+ escalating monster waves including many-headed giants, evil cat people, and cyclops enemies
• 💰 Earn Coins from kills and spend them at the equipment shop on swords, magic weapons, and gear upgrades
• 💎 Collect Gems - the premium secondary currency - to unlock better weapons not reachable with standard Coins alone
• 🏆 Survive to the wave milestone that triggers the princess rescue - she then fights alongside you for all future waves
• 🗺️ Continue past the first rescue to unlock additional princess companions, each adding more combat support

Gems are the clearest path to premium weapons early on and are difficult to earn in large quantities purely through combat. The developer XiaoChen posts updates directly on the Roblox profile @XiaoChenXiaoChen - there is no Twitter or Discord, so following that profile is the only way to stay current. For other wave-defense PvE experiences, see similar Roblox action and RPG titles.