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.

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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.

How big? OTHER

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

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.

When? HISTORY

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

How many? OTHER

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

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.

What? TRIVIA

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

How sweet? TRIVIA

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

How wide? GEOGRAPHY

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