an HCL GUVI product

Pick a job path. Play the skills. Save your progress.

Browser sims for FDE and Data Science — plus guilds, leaderboards, and Fun Friday.

Free · Save XP · Join guilds

Browse tutorials

C Language C++C#Java DBMS Python Go Lang Data Structures Operating System Computer Network Git Guide Linux

Start in 60 seconds

How StudyTonight works

Same order every time: job → skills → game briefing → play → profile.

Pick a job

FDE or Data Science. DevOps and Full Stack are coming soon.

Read the role

Pay, time, and ordered skills. Start with skill 1 if you are new.

Play the skill

Open the game briefing, then fullscreen play. Finish levels to unlock the next skill.

Check progress

Your profile shows what you are studying for and which skill is next.

Free. Keeps XP and unlocks your ladder.

Job paths

Choose your path

Two paths are open. Two more are listed so you know what is coming.

Open now

Forward Deployed Engineer (FDE)

Fix live production outages: read logs, keep services up, and keep clients online.

About 6–8 weeks, a few sessions a week · 6 steps

Open now

Data Scientist

Answer business questions with SQL: filter, join, find trends, and measure funnels.

About 4–6 weeks, a few sessions a week · 5 steps

Coming soon

DevOps Engineer

Ship and run software with CI/CD, containers, and observability. Path coming soon.

Curriculum not open yetDetails

Coming soon

Full Stack Developer

Build web apps end to end with MERN. Learn path is live (JS → Node → Express → Mongo → React); job ladder games still coming.

Curriculum not open yetDetails

Arcade

Play now

Guest can try. Account saves XP and unlocks the ladder.

Challenge of the Day

Today: DNS Detective

Trace DNS, HTTP, and packets through real cases until the internet clicks.

DNS Detective

Trace DNS, HTTP, and packets through real cases until the internet clicks.

Linus Desk

A fake Ubuntu desk and terminal — files, processes, and real shell missions.

SQL Noir

Solve cases with SQL: SELECT to joins, while the data tells the story.

SysDesign Ops

Wire cloud boxes, survive traffic and outages, and keep the bill under control.

See all games →

Play with people

Guilds, ranks, and Fun Friday

Squad up, climb ranks, or run Friday party rooms — free account required.

Guilds

Squad up, duel friends, and play as a crew.

Open

Leaderboards

Climb XP ranks and see who is shipping.

Open

Fun Friday

Party rooms — Impostor, Auction, and more.

Open

AI study companion

Stuck on a skill or concept? Ask in plain English — short answers, then one next step. Ask the companion after you sign up.

Also on StudyTonight

Tutorials, exams, and guidance

The library and career quiz sit alongside the job paths.

Learn to code

C, Python, Java, and more — Read → Write → Quiz.

Exams

GATE and aptitude practice when you need a score check.

Tech Blog

Articles from the StudyTonight library.

Free career guidance · 2 minutes

Free account. Keep XP. Join a guild.

An HCL GUVI product — practice here, grow into paid programs when you are ready.