What this game teaches
Market timing promises the best of both worlds: be invested for the rises and in cash for the falls. In practice it is very hard. To beat staying invested, you need to be right twice, when you get out and when you get back in, and the market's best months often follow its worst ones, when the timer is still in cash.
The game replays the NIFTY 50 month by month from February 2019 to October 2026, with the dates hidden. Your opponents follow fixed rules on exactly the same months:
- Buy and hold: always invested.
- 10-month average rule: invested when the index closed the previous month above its 10-month average, otherwise in cash. This is a well-known trend-following rule.
- Headline reactor: moves to cash after any month in which the index fell more than 5%, and returns after two rising months in a row, like an investor who reacts to frightening news.
How the rules did over this period
| Approach | ₹1 lakh became | Annual return | Worst fall | Switches | Months invested |
|---|---|---|---|---|---|
| Buy and hold | ₹2,08,995 | 10.1% | −29.3% | 0 | 92 of 92 |
| 10-month average rule | ₹2,33,537 | 11.7% | −8.4% | 11 | 69 of 92 |
| Headline reactor | ₹1,96,989 | 9.2% | −19.5% | 9 | 73 of 92 |
In this period the 10-month rule finished ahead of buy and hold, and with a far smaller worst fall (8.4% against 29.3%), helped by being in cash for much of the sharpest decline. That is the main thing trend rules offer: stepping aside during long or deep declines. The cost is being late on the way back, and over other periods and markets such rules have often trailed buy and hold, so one good stretch is not proof of an edge. Notice also that the rule follows a fixed, written plan; it does not react to news. The headline reactor ended behind buy and hold, a pattern often seen when investors sell after sharp falls and wait for reassurance before returning.
One period is not proof. Timing rules can look better or worse depending on the years tested, and in real life every switch out of an equity fund can also trigger capital gains tax, which this game ignores. Our common mistakes article shows what missing the NIFTY's best days would have cost over the same years.
Frequently asked questions
Is this real market data?
Yes. The game uses NIFTY 50 month-end closing values published by NSE. Dates are hidden while you play and revealed at the end.
Why does cash earn 6% a year?
It is a simple stand-in for a liquid fund or short-term deposit. The exact rate makes little difference to the lesson.
Does the 10-month average rule work?
Trend rules like this have historically reduced the depth of long bear markets in many markets, but they often lag in fast, V-shaped recoveries and can trail buy-and-hold over shorter periods. They are a risk-management tool rather than a way to earn more.
Related reading
- FOMO and panic: the psychology of market cycles
- 7 costly mistakes of retail investors
- NIFTY 50 SIP returns: data study
- Rupee-cost averaging lab
This game uses simulated prices and random outcomes for learning. It is not a trading platform, uses no real money and does not predict real markets. Everything runs in your browser; nothing you enter is sent to us. Read our disclaimer. Built and checked by Pradeep Rawal.