Rodrigo Manuel Pérez Ruiz
About me
When I was a kid I used to play lots of videogames. When I got my own GameBoyAdvance SP I got hooked on Pokemon Emerald and other Nintendo games, but I never thought about making them as a job.
Because of that, and because I didn't know what to study, I started studying naval engineering at the UPM.
But it wasn't my thing, I wasn't bad at math or physics but I didn't enjoyed it that much. Luckily that same year I discovered the game development career so I changed my mind and tried this new challenge.
Nowadays, I enjoy coding, creating worlds and debbuging more than just playing games and part of it it's because the great team I usually work with.
I love animals, parkour and nature.
Job assignments
This section contains all the practical assignments I have completed during my job search.
Each project includes a detailed description of the test requirements and the available time window, as well as the final video result, available for download from the Play Store.
With this collection, I want to demonstrate my problem-solving approach, technical knowledge of the engine, and ability to achieve high-quality results under real-world constraints.
Doomed Realms - Vampire Survivors with a twist
Valladolid, Augost, 2026
Job offer: Middle Game Developer
Goal: Desarrolla una iteración del género Vampire Survivors con un giro
Gameplay Requirements:
- The game must keep a nive performance on mobile with portrait aspect ratios
- Develop the input controls and a kinematic character
- The level must contain solid obstacles the player and/or the enemies collide with
- Game feel is very important
- Don't use 3rd party assets nor plugins (tween libraries are allowed)
- Unity 6000.3.x LTS
- 1 week
- Player with dinamic input and smooth movement, adjustable speed and sinchronized with the animation clips, smooth collisions with the level obstables
- Generation of 4 different enemies with a procedurally incresing difficulty and with a pooling implementation
- Universal Pathfinding through a flow map to avoid hundreds of pathfinding call per each enemy
- Player progression through gold and XP points system
- 4 Weapons y 7 passive skills that can be obtained by levelling up
Once the basic gameplay was completed I could focus on the twist, one that I could implement in the remaining day I had left. I initially used broken buildings as main obstacles so I came with
the idea of rebuilding.
In Doomed Realms you can invest gold to rebuild buildings in order to temporally exploit their powers within their action radious:
Double damage, Healing, Area damage o Ressurection.
The game can be downloaded from the playstore on the next link:
Sakura Run - Infinite Obstacle Runner
Bilbao, May, 2026
Job offer: Senior Game Developer
Goal: Develop a prototype for this game
Gameplay Requirements:
- The character should run forward automatically
- Use swipe input to move the character right, left, jump or slide
- Infinite mode or 1-2 fun levels
- Don't use 3rd party assets nor plugins (no tween libraries are allowed)
- Unity 22.3.62f2
- 2 weeks
- Infinite / Zen: where the road and obstacle generation implements pooling to keep a nice performance
- Level progression: including a 3 coin collecting mechanic as in New Super Mario Bros. It gives an extra challenge in every level and a level selection window where the progress and time record are shown for each of them
For this game, after the test was delivered, I decided to implement a Playable Ad creativity using Unity Playworks. I created a new branch for Creativities,
created a new scene and optimize the scene and project following the Unity Guide recomendations.
The result is a very optimized and reduced version of the game (under 1.5Mb) with a very good performance.
You can access the playable version by clicking this link or scaning this qr code.
The game can be downloaded from the playstore on the next link: