Riverside Files - Idle Tycoon

You've just rented an office in a small river town. The desk is dusty, the phone hasn't rung, and someone has left a brass key on your doormat.

Riverside Files is an idle game about building a detective agency. Your detectives close cases on their own and keep earning while the app is closed. You spend the fees on the office: a better desk, a coffee machine, more filing cabinets, a forensics lab. Tap anything in the room to upgrade it and watch it change, from a battered pine desk to a leather-topped partner's desk.

BUILD THE OFFICE
Start in the bullpen, then open the Records room, the Interview suite and the Forensics lab as the agency grows.

HIRE DETECTIVES
Ten detectives in four specialties. Forensics makes your equipment pay more, Interrogation boosts the Cases board, Surveillance makes the coins you tap worth more and Legal raises every fee. Who you hire next changes how your agency earns.

KEEP THE PAPERWORK MOVING
Records files your closed cases before you get paid. If your detectives get ahead of the filing, fees pile up in a backlog until you upgrade the cabinets.

PLAY THE CASES BOARD
Open a case file and link the evidence that matches. Chain links for a combo and look out for the gold thread. You can't fail a round, and you keep whatever you earn.

ONE MYSTERY PER CITY
Each city has its own case, told over 10 illustrated story cards. You unlock the next card by opening a room, reaching an earnings goal or winning on the Cases board. The first case starts with that brass key and a clock tower that hasn't chimed in forty years.

MOVE UP TO A BIGGER CITY
When you've finished with the small town, retire it and take on the state capital, then a national agency, then an international one. Retiring earns commendations for permanent upgrades that carry over to every city after.

WEEKEND EVENTS
From Friday to Sunday a themed event office opens: a harbour, a casino, a museum or a railway. You start from $0, play the Cases board for event cash, buy event upgrades and claim rewards as you go.

THE EVIDENCE LOCKER
Collect 16 keepsakes from the story, events and supply drops. Each one gives a permanent bonus, like more income or a longer offline window, and a full set of four doubles them. You keep them when you retire a city.

ALSO
• At least 12 hours of offline earnings at the full rate
• Daily rewards, daily quests and a daily case with a streak bonus
• A Most Wanted board and achievements that add permanent income
• Plays in 13 languages

You don't need an account. Your agency is saved on your phone, and you can back it up with Google sign-in from Settings if you like. Ads are optional: watch one for a bonus, like double income for 30 minutes, or ignore it.

Recent changes:
What's new
• New story: one mystery per city, told over illustrated cards. Unlock the next one by opening a room, winning on the Cases board or reaching an earnings goal.
• Weekend event, Friday to Sunday: start from zero, play Cases for event cash, buy upgrades and win rewards.
• Evidence locker: collect keepsakes with permanent bonuses.
• Records now files your cases. If fees pile up, upgrade filing to get paid.