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JWorld Blog
Game guides and hidden rules, notes from how we build, and the Korean history and culture inside our games, written by the JWorld team.
180 Fish and No Artist: How Bobber Rise Draws Its Fish From Parts in Code
A dev note on how the JWorld team generates and draws all 180 album fish in Bobber Rise from a handful of code parts, with the real numbers, the distinctness rules and the tests that guard them.
Gomoku Rules Explained: Free, No 3-3 and Renju
The same five-in-a-row game plays differently under different rules. Learn what each of the three rule sets forbids, how to spot 3-3, 4-4 and overlines, and how to practice with the daily puzzle.
Hwacha Fortress Beginner Guide: Blocks, Tiers, Boss Timings and Beacon Levels
How to survive your first ten minutes in Hwacha Fortress: steam charge and crushing, which blocks to pick, the four castle tiers, when the three bosses arrive, and what each beacon level changes.
Korea's Village Guardian Posts and the Five Elements: What Jangseung Guard Borrows and What We Invented
What jangseung posts were in Korean villages, how the five elements (wood, fire, earth, metal, water) work, and how Jangseung Guard turns them into game rules.
Harbor Haul guide: cargo types, wind, glass and barrels, and how to get 3 stars
To earn 3 stars in Harbor Haul you need to know what to place where and when to tap. The ten cargo types, crane timing, how to handle glass, barrels, wedges and wind, and the exact star conditions.
One game, many storefronts: how we ship to the web, portals and app stores from one codebase
How the JWorld team ships one game to the web, game portals and app stores from the same code. Build modes, platform adapters, ad rules and tests, shown with the real code of Hanpan.
Stitch Hoop guide: choosing needles and using the pincushion
Stars in Stitch Hoop come from planning ahead: which side's needle to tap, and what to park on the pincushion. How needles move, how the pincushion works, the star rules and the special needles.
Dokkaebi Are Not Demons: Korean Goblin Folklore and the Yokai of Dokkaebi Night
What dokkaebi really are in Korean folklore, where the spirits and weapons of Dokkaebi Night Parade come from, and which parts we invented ourselves.
Janggi for Chess Players: What Changes, the Palace, Setups and Your First Wins
A side-by-side look at chess and janggi (Korean chess), the rules that trip up chess players, and opening tips for each AI opponent on the Hanpan ladder.
What was the Joseon hwacha, really? The history and imagination behind Hwacha Fortress
How Korea's hwacha fired 100 rocket arrows at once, how it was actually used, and how we reimagined it as a moving fortress for our game, with a clear line between history and invention.
Bobber Rise guide: how to reel without snapping the line, and how to read the 5 pull styles
How the tension needle in Bobber Rise really works, how to spot each of the five pull styles before it hits, and which gear to buy first, straight from the game's design numbers.
Arrow Sweep guide: how to think your way to par and three stars
Three stars in Arrow Sweep don't come from tapping the arrow that clears the most. They come from an order that leaves nothing stranded. The sweep rule, each world's mechanic, and the Daily board explained.