Esteban Verified creator

I'm Esteban, an indie developer from Switzerland. I build roughly.is as a one-person passion project, a growing collection of daily estimation games about numbers, places, sizes, prices and everything in between. I like making small games that test how good our intuition about the world really is.

Instagram TikTok Website YouTube

Games by Esteban

Where? GEOGRAPHY

A silhouette, a name, an empty world map: move the map under the crosshair to where the animal lives, then see its real range.

Who? TRIVIA

Guess what the crowd actually answered, from published surveys. Five rounds a day; the reveal shows the crowd's answer beside your guess.

How big? OTHER

Drag the shape to guess the size of a real thing, against a reference that never changes.

How many? OTHER

Drag up or down to guess how many people fit in a real place.

How sweet? TRIVIA

Pull a slider up to guess the amount of sugar in a real product.

Which way? GEOGRAPHY

Point the direction a real river, road, or route runs, then see the real answer on a map.

How expensive? PRICE

One item, one place, one date: set the price it cost, then see the real price from official price statistics.

When? HISTORY

Guess when a real event happened by placing it on a timeline.

How wide? GEOGRAPHY

Drag outward to guess how wide a real city is, relative to another city.

What? TRIVIA

Given two things, guess which one was bigger yesterday. All sourced from real pageview data.