No revenue estimate for PSN — its rating/review counts don't calibrate to sales the way Steam's do. Reviews and prices only.
Royal Defense Invisible Threat
The castle needs a hero as hordes of trolls are surrounding it! Build towers, save money, learn spells, and keep the enemy away! Follow the exciting story of the dwarven kingdom's eternal struggle against the troll hordes, who want only to crush the dwarves and claim their territory. To defeat these monstrous hordes, you must construct defensive towers and units and learn to wield powerful spells. You'll never be lacking for new and exciting ways of decimating those nasty trolls! Online features may be terminated at any time. Use of PSN and SEN account are subject to the Terms of Service and User Agreement and applicable privacy policy (see terms at sonyentertainmentnetwork.com/terms-of-service & sonyentertainmentnetwork.com/privacy-policy). *Online multiplayer also requires a PlayStation®Plus subscription.
Ratings
260
read from the US store
Review score
77%
7.7/10 · read from the US store
Discounts
What happened when the price fell
Every price cut of more than 20% we have observed, in each market that quoted one, with this game's chart position on either side of it. These are episodes, not a model: a sale is one event, and one event cannot tell you what the next one will do.
Price cut of Jul 30
1 marketUnited States$6.99$2.09−70%no chart position on both sides of this date
Too few observations to say whether a discount moves this store's chart at all: across the last 30 days PlayStation · Bestsellers · 30d · Australia has just 0 day-to-day chart moves that followed a price cut, against 148 that did not. We are publishing the count instead of a direction — 20 is the fewest we will draw a conclusion from, and price collection outside the United States began on 6 August 2026.
Prices outside the United States have been collected since 6 August 2026 and chart positions since 19 July 2026, so a cut older than that has no market to compare and a market that joined later has no history yet. Nothing here is converted between currencies.